Relevant bibliographies by topics / Canopy layer / Dissertations / Theses
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Dissertations / Theses on the topic 'Canopy layer'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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1

Krayenhoff, Eric Scott. "A multi-layer urban canopy model for neighbourhoods with trees." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/51674.

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Over 50% of the world’s population lives in cities, many of which are hot, polluted, and expanding. The design of cities impacts local meteorology and climate, which affect building energy use and the comfort and health of urban residents. Numerical models that incorporate the relevant urban elements and physical processes can predict these effects and guide management strategies. Addition of vegetation is a key design strategy for moderation of local urban climate, and many cities already boast extensive vegetation. Relative to shorter vegetation, urban trees have unique effects on local clim
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2

Ware, John (John Welling). "An analysis of quadrotor flight in the urban canopy layer." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/107056.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 105-113).<br>This thesis presents two distinct bodies of work concerning quadrotor flight in urban wind fields. The first attempts to characterize a quadrotor's ability to exploit urban wind fields for improved flight performance. A computational fluid dynamics model is used to obtain a wind field estimate given a 3D model of the environment and a prevailing wind estimate. Minimum-energy trajectories are th
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3

Gavrilov, Konstantin. "Numerical modeling of atmospheric boundary layer flow over forest canopy." Thesis, Aix-Marseille 2, 2011. http://www.theses.fr/2011AIX22007/document.

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Ce travail de recherche concerne l’interaction entre une couche limite atmosphérique et une canopée (représentant un couvert forestier). J’ai étudié le problème complexe de production et d’évolution de grosses structures turbulentes au dessus de couverts homogènes et hétérogènes, moyennement denses. J’ai abordé ce problème en mettant en œuvre les outils de la simulation numérique des grosses structures (LES) et du calcul haute performance (HPC). Les résultats numériques obtenus, reproduisent correctement les principales caractéristiques de cet écoulement, telles qu’elles sont rapportées dans l
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4

FRANCONE, CATERINA. "Study of the atmospheric boundary layer processes over sloping terrain covered by sparse canopy." Doctoral thesis, Politecnico di Torino, 2012. http://hdl.handle.net/11583/2496734.

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The aim of this thesis is the study of the exchange processes at atmosphere/biosphere interface, with a particular focus on momentum and heat transport over complex terrain morphology, varying surface roughness, and a wide range of atmospheric thermal conditions. The surface roughness object of the research is a sparse canopy layer evolving in time along the vegetative season, and characterized by a multiplicity of temporal and spatial scales influencing the properties of the turbulent fluxes. Both experimental and modelling approaches characterize the study methodology. Measurements are first
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5

Stevens, Emma. "The feasibility of introducing canopy species and field layer species concurrently in woodland creation schemes." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437762.

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6

Tian, Geng. "Analysis of the unsteady boundary-layer flow over urban-like canopy using large eddy simulation." Thesis, Ecole centrale de Nantes, 2018. http://www.theses.fr/2018ECDN0062/document.

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L’urbanisation croissante fait émerger des enjeux sociétaux et environnementaux relatifs à la pollution atmosphérique et au microclimat urbain. La compréhension des phénomènes physiques de transport de quantité de mouvement, de chaleur et de masse entre la canopée urbaine et la couche limite atmosphérique est primordiale pour évaluer et anticiper les impacts négatifs de l’urbanisation. Les processus turbulents spécifiques à la couche limite urbaine sont étudiés par une approche de simulation des grandes échelles, dans une configuration urbaine représentée par un arrangement de cubes en quincon
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7

Grawe, David [Verfasser], and K. Heinke [Akademischer Betreuer] Schlünzen. "High resolution assessment of concentrations in the urban canopy layer / David Grawe ; Betreuer: K. Heinke Schlünzen." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2019. http://d-nb.info/1190819139/34.

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8

Arnqvist, Johan. "Strömningen i och över en skog : utvärdering av en 'mixing-layer' hypotes." Thesis, Uppsala University, LUVAL, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-105408.

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<p>A new theory for predicting the windprofile over a canopy has been evaluated. The theory was first presented by Harman and Finnigan (2007). The theory relies on the forming of a mixing-layer above the canopy, due to different mean wind in and above the canopy. Characteristics from both mixing-layer and Monin Obukhov similarity theory have been used to develop the governingequations that give the wind profile. The theory has been used to calculate wind profiles for sixdifferent atmospheric stabilities. In order to evaluate the theory, profiles from the theory have beencompared to measurement
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9

Styles, Julie Maree, and julie styles@oregonstate edu. "Inverse Modelling of Trace Gas Exchange at Canopy and Regional Scales." The Australian National University. Research School of Biological Sciences, 2003. http://thesis.anu.edu.au./public/adt-ANU20030905.040030.

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This thesis deals with the estimation of plant-atmosphere trace gas exchange and isotopic discrimination from atmospheric concentration measurements. Two space scales were investigated: canopy and regional. The canopy-scale study combined a Lagrangian model of turbulent dispersal with ecophysiological principles to infer vertical profiles of fluxes of CO2, H2O and heat as well as carbon and oxygen isotope discrimination during CO2 assimilation, from concentration measurements within a forest. The regional-scale model used a convective boundary layer budget approach to infer average regional is
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10

McClelland, Rebecca Elizabeth Mooneyhan. "Ground Layer Response to Disturbance in the Pine-Dominated Eastern Foothill Region of West-Central Alberta, Canada." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/dissertations/436.

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The canopy cover of the Pinus contorta forests of west-central Alberta, dictates colonization of the forest floor ground layer. This dynamic ground layer is a mosaic of feather mosses and reindeer lichens in a system driven by disturbance. In this project, anthropogenic was used to control canopy cover change and study its effects on the ground layer. Timber companies selectively mechanically thinned sections producing three experimental areas with uncut controls. Data were collected from 182, 6.5 m2 plots located in the four thinning areas. Six general areas of inquiry were posed around deter
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11

Zhang, Hengyue. "Using satellite remote sensing, field observations and WRF/single-layer urban canopy model simulation to analyze the Oklahoma City UHI effect." Thesis, San Jose State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1594250.

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<p> The Urban Heat Island (UHI) was investigated using satellite data, ground observations, and simulations with an Urban Canopy Parameterization in a numerical weather prediction model. Satellite-observed surface skin temperatures at Xi'an City and Oklahoma City (OKC) were analyzed to compare the UHI intensity for the two inland cities. A larger population density and larger building density in Xi'an City creates a stronger skin-level UHI effect. However, ground observed 2-m surface air temperature (Tair) data showed an urban cooling island (UCI) effect that occurred over an urban region i
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12

Polito, Martina. "Mean flow and turbulent exchange characteristics in real urban street canyons: the Lazzaretto case study." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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In the context of the European iSCAPE project (Improving the Smart Control of Air Pollution in Europe) an experiment was set up in order to test photocatalytic coatings effectiveness in reducing the concentration of pollutants. Further analysis on various aspects of the urban environment have been possible thanks to the experiment. The measurements collected during the experimental field campaign have been used to study the differences in the atmospheric phenomena due to the different morphology of two street canyons. Data in time periods characterized by non-synoptic conditions have bee
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13

Walshe, John D. "CFD modelling of wind flow over complex and rough terrain." Thesis, Loughborough University, 2003. https://dspace.lboro.ac.uk/2134/7827.

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A model has been developed using the general-purpose Navier-Stokes solver CFX4 to simulate Atmospheric Boundary Layer flow over complex terrain. This model has been validated against the measured data from the Askervein Hill experiment, and has been shown to perform well. The CFD model is also compared to the WAsP linear model of wind flow over topography, and a significant improvement is noted for flow over complex topography. Boundary conditions, gridding issues and sensitivity to other solver parameters have all been investigated. An advanced roughness model has been developed to simulate f
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14

Müller, Adelcio. "Invasibilidade de Hovenia dulcis Thunberg (Rhamnaceae) em Floresta Atlântica no sul do Brasil." Universidade Federal de São Carlos, 2015. https://repositorio.ufscar.br/handle/ufscar/1851.

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Made available in DSpace on 2016-06-02T19:30:11Z (GMT). No. of bitstreams: 1 6718.pdf: 3584867 bytes, checksum: eaaad7421677fc2d021e4e8e56e7336b (MD5) Previous issue date: 2015-03-13<br>Universidade Federal de Sao Carlos<br>Biological invasions are a major threat to biodiversity conservation, and many studies have been conducted to give an answer to why some ecosystems are more invaded than others. Canopy openness and the litter thickness may be two of the factors to drive the seed germination and establishment of seedling of tree species. Hovenia dulcis is a tree widely distributed in south
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15

Pluvinage, Franck. "Effets d’interfaces poroélastiques sur la stabilité d’un écoulement incompressible cisaillé." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2036/document.

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L’objectif de ce travail est d’étendre l’étude locale de la stabilité linéaire des interactions fluide-structure à des domaines peu ou pas encore abordés dans la littérature ; l’influence des interfaces poroélastiques sur les couches limites bidimensionnelles, tridimensionnelles, ou aspirées, ainsi que l’écoulement dans une canopée modélisé par un profil de vitesse réaliste, sont ainsi traités. Les résultats révèlent que dans les couches limites 3D, la compliance réduit le domaine d’instabilité du mode TS dominant mais fait apparaître des modes hydroélastiques ; à l’inverse, la perméabilité st
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16

Henning, Jason Gregory. "Modeling Forest Canopy Distribution from Ground-Based Laser Scanner Data." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/28431.

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A commercially available, tripod mounted, ground-based laser scanner was used to assess forest canopies and measure individual tree parameters. The instrument is comparable to scanning airborne light detection and ranging (lidar) technology but gathers data at higher resolution over a more limited scale. The raw data consist of a series of range measurements to visible surfaces taken at known angles relative to the scanner. Data were translated into three dimensional (3D) point clouds with points corresponding to surfaces visible from the scanner vantage point. A 20 m x 40 m permanent plot loc
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17

Hall, Terianne C. "Quantifying exchange processes in the urban canopy layers of dense neighborhoods." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97837.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 269-274).<br>There is a global trend towards urbanization, particularly in developing regions that are home to new and rapidly growing cities. In the center of large, dense urban areas, weak exchange between the urban canopy layer (UCL) and the urban boundary layer (UBL) above it results in insufficient removal of heat and pollutants. The magnitude of the exchange processes between the UCL and the UBL is direct
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18

Blackman, Karin. "Interactions multi-échelles entre la basse atmosphère et la canopée urbaine." Thesis, Ecole centrale de Nantes, 2017. http://www.theses.fr/2017ECDN0028.

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La couche limite urbaine est caractérisée par la présence de structures cohérentes complexes, telles que des structures de grande échelle à basse vitesse, et par des processus turbulents intermittents de balayage et d’éjection, responsables du transport de masse, de chaleur et de quantité de mouvement. Ces structures sont bien identifiées qualitativement mais leurs interactions avec les petites structures induites par la présence de la canopée urbaine sont encore mal connues. Afin d'étudier ces interactions, des écoulements de couche limite se développant sur des parois rugueuses sont étudiés
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19

Lee, Alex C., and alexanderlee@aapt net au. "Utilising airborne scanning laser (LiDAR) to improve the assessment of Australian native forest structure." The Australian National University. Fenner School of Environment and Society, 2008. http://thesis.anu.edu.au./public/adt-ANU20090127.222600.

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Enhanced understanding of forest stocks and dynamics can be gained through improved forest measurement, which is required to assist with sustainable forest management decisions, meet Australian and international reporting needs, and improve research efforts to better respond to a changing climate. Integrated sampling schemes that utilise a multi-scale approach, with a range of data sourced from both field and remote sensing, have been identified as a way to generate the required forest information. Given the multi-scale approach proposed by these schemes, it is important to understand how sc
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20

Mills, Gerald M. "Simulation and measurement of the heat exchange between the urban canopy and boundary layers /." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487672245901056.

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21

Ashworth, Andrew Lee. "Predicting Southeastern forest canopy heights and fire fuel models using Geoscience Laser Altimeter System data." Master's thesis, Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-05102008-141659.

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22

Holmgren, Johan. "Estimation of forest variables using airborne laser scanning /." Umeå : Dept. of Forest Resource Management and Geomatics, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s278.pdf.

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23

Grabrian, Dennis M. "Paul VI, understanding of the role of canon law and the person and task of the canon lawyer." Theological Research Exchange Network (TREN), 1986. http://www.tren.com.

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24

Colaço, André Freitas. "Mobile terrestrial laser scanner for site-specific management in orange crop." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11152/tde-23012017-151317/.

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Sensors based on LiDAR (Light Detection and Ranging) technology have the potential to provide accurate 3D models of the trees retrieving information such as canopy volume and height. This information can be used for diagnostics and prescriptions of fertilizers and plant protection products on a site-specific basis. This research aimed to investigate the use of LiDAR sensors in orange crops. Orange is one of the most important tree crop in Brazil. So far, research have developed and tested LiDAR based systems for several tree crops. However, usually individual trees or small field plots have be
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25

TRAVIER, CHRISTIAN. "Etude, realisation et experimentation d'un canon hyperfrequence declenche par un laser sub-picoseconde." Paris 11, 1995. http://www.theses.fr/1995PA112549.

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Un canon hf est constitue d'une cavite hf dans laquelle on loge une cathode, qui peut-etre une photocathode illuminee par un laser, ce qui permet de produire des impulsions electroniques tres breves (quelques picosecondes), tres intenses, et de faible emittance. Cette these decrit le travail effectue durant la periode 1990-1995 sur le projet candela (canon declenche par laser), qui est un photo-injecteur experimental etudie au laboratoire de l'accelerateur lineaire. Apres avoir presente les avantages d'un photo-injecteur par rapport a un injecteur conventionnel, et rappele les modeles de la dy
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26

GONICHON, JEROME. "Etude theorique et experimentale d'un canon hf declenche par laser, fonctionnant a 17 ghz." Paris 7, 1995. http://www.theses.fr/1995PA077031.

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Le canon hf a photocathode permet de produire un faisceau d'electrons tres intense, ayant une tres faible emittance. Alors que la frequence de fonctionnement de tous les canons hf existants ne depasse pas 3 ghz, le travail presente dans cette these decrit l'etude et la realisation d'un canon hf fonctionnant a 17 ghz. La cavite hf est constituee d'une cellule et demie, fonctionnant dans le mode. La dynamique des electrons dans cette cavite a ete simulee en utilisant le programme parmela, modifie de maniere a rendre la distribution initiale des macro-particules plus homogene et a augmenter ainsi
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27

Millar, Jenna. "Anatomical and transcriptomic characterization of the canola (Brassica napus) maternal seed subregions during ovule and seed development." Plant Science, 2015. http://hdl.handle.net/1993/31776.

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Canola (Brassica napus) contributes $19.3 billion dollars to the Canadian economy each year as a result of its oil- and protein-rich seeds. These economically important seed products are produced in highest concentration in the embryo. Embryo development is supported nutritionally and structurally by the maternal subregions, which include the inner (ISC) and outer distal seed coat (OSC), the chalazal seed coat (CZSC), and the chalazal proliferating tissue (CPT). Research on the maternal seed subregions is limited to the SC as a result of its accessibility; the embedded CZSC and CPT subregions
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28

Thimon, Françoise. "Synthèse et caractérisation de couches minces Fe-Al-O obtenues par faisceaux d'ions ou évaporation." Lyon 1, 1992. http://www.theses.fr/1992LYO10154.

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Ce memoire est consacre a l'etude de couches minces contenant les trois elements fe, al, o. Ces couches ont ete elaborees par differents procedes: pulverisation par canon a ions, evaporation par canon a electrons, ablation laser et implantation ionique. Nos efforts se sont tout d'abord portes sur la mise au point de la technique de pulverisation ionique. Nous avons examine l'influence des parametres intervenant sur la vitesse de depot (temps, variables geometriques. . . ) et avons ainsi determine leurs valeurs de maniere a optimiser cette vitesse. La technique de pulverisation ionique a ensuit
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29

Parsons, Anna Francesca. "The use of Guisborough : the liturgy and chant of the Augustinian canons of the York Province in the later Middle Ages." Thesis, University of Exeter, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414046.

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30

Nichols, Donald Dean. "The Augustinian Canons in the Diocese of Worcester and their relation to secular and ecclesiastical powers in the later Middle Ages." Thesis, University of Wales Trinity Saint David, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.683234.

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31

Vinatier, Thomas. "Influence des paramètres du laser sur la dynamique des paquets courts d’électrons relativistes dans des accélérateurs linéaires basés sur des canons RF et développement de diagnostics associés." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112195/document.

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Dans de nombreuses applications, des paquets d’électrons relativistes sub-ps sont requis : Accélération laser-plasma, Lasers à électrons libres, Génération de rayonnement THz intense, Etude des phénomènes ultra-rapides dans la matière… L’aspect court des paquets et la nécessité d’un fort courant crête pour les applications impliquent de fortes forces de charge d’espace conduisant à une dégradation des propriétés du faisceau, telle que son émittance transverse et sa longueur. La principale difficulté est de caractériser, modéliser et prendre en compte ces effets. Ma thèse s’inscrit dans ce cadr
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32

Vinçont, Jean-Yves. "Détermination des flux turbulents de masse dans le sillage d'un obstacle : application à l'écoulement à l'intérieur de la canopée urbaine." Ecully, Ecole centrale de Lyon, 1999. http://bibli.ec-lyon.fr/exl-doc/TH_T1782_jyvincont.pdf.

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Ce travail s'inscrit dans le cadre de l'étude des phénomènes de dispersion des polluants de l'air à l'intérieur de la canopée urbaine. Il se situe à l'échelle locale et propose une réponse partielle à l'étude des écoulements et de la dispersion d'un scalaire passif au voisinage d'un obstacle. Une présentation non exhaustive des différents paramètres à l'origine de la pollution de l'air dans les cités met en évidence les types de sources rencontrées, les réactions chimiques éventuelles ainsi que leurs interactions possibles avec les écoulements turbulents de l'atmosphère. Une approche classique
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33

Alléon, Julien. "Vers une représentation à l'échelle globale du microclimat forestier dans le modèle de surfaces continentales ORCHIDEE." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASJ029.

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Les dynamiques temporelles et spatiales des échanges entre les surfaces continentales et l'atmosphère sont en grande partie contrôlées par la végétation. Dans un contexte de changement climatique, la précision de la modélisation des bilans d'énergie, d'eau et de dioxyde de carbone des écosystèmes dans les modèles de surfaces continentales revêt ainsi d'un double enjeu : elle permet d'améliorer la représentation des échanges entre les surfaces et l'atmosphère et, par conséquent, d'améliorer la fiabilité des modèles de climats ; et elle permet également de comprendre et de quantifier l'impact du
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Barbosa, Lucas Jamiro. "Detecção e extração de vegetação utilizando dados lidar : determinação de indivíduos e aglomerados /." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/152791.

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Balde, Hamadou. "Remote sensing of laser- and sun-induced chlorophyll fluorescence for studying water and carbon functioning in terrestrial ecosystems." Electronic Thesis or Diss., Sorbonne université, 2023. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2023SORUS674.pdf.

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La fluorescence chlorophyllienne induite par le soleil (SIF) est désormais utilisée comme outil pour suivre la production primaire brute (GPP) du couvert végétal de différents écosystèmes. La SIF est importante pour comprendre le cycle global du carbone dans un contexte de changements climatiques. Cependant, l’usage de la SIF pour suivre les variations de la GPP est entravée par des facteurs confondants (propriétés biochimiques des feuilles, facteurs abiotiques, etc.). Dans cette thèse, on propose d’utiliser des observations à plusieurs échelles [satellitaires (TROPOMI et MODIS) et au sol] de
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Janda, Miloš. "Detekce hran pomocí neuronové sítě." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237175.

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Aim of this thesis is description of neural network based edge detection methods that are substitute for classic methods of detection using edge operators. First chapters generally discussed the issues of image processing, edge detection and neural networks. The objective of the main part is to show process of generating synthetic images, extracting training datasets and discussing variants of suitable topologies of neural networks for purpose of edge detection. The last part of the thesis is dedicated to evaluating and measuring accuracy values of neural network.
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Escolà, i. Agustí Alexandre. "Mètode de dosificació variable en temps real per a l'aplicació de productes fitosanitaris en fructicultura de precisió." Doctoral thesis, Universitat de Lleida, 2010. http://hdl.handle.net/10803/8158.

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L'objectiu general d'aquesta tesi és desenvolupar un mètode dinàmic de dosificació de productes fitosanitaris que permeti incrementar significativament l'eficiència d'aplicació, reduir les pèrdues i disminuir la variabilitat de les deposicions sense disminuir l'eficàcia de les aplicacions en plantacions fructícoles. El mètode proposat es basa en la caracterització electrònica de les dimensions de la capçada i en dosificar el producte fitosanitari de forma variable, contínua i en temps real. Aquest objectiu s'ha establert a partir de la formulació de tres hipòtesis de partida sustentades en la
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Yang, Jie, and 楊杰. "Heterogeneous effects on the flow structure near a coral-colony canopy layer." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/37191372461361277569.

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碩士<br>國立中央大學<br>水文與海洋科學研究所<br>104<br>The north and south channels in Dongsha Atoll National Park play an important role in biological ecosystems and biogeochemical and biological status process. The boundary flow near the canopy affects micro-scale coral reef ecosystem, for example, the larval transport behaviors and organism distribution. Here, we present a four-week in-situ measurement of waves and currents. The dataset covers two spring-neap cycles that the major solar tide modulated the major lunar tide. The near-bottom current profiles were measured by one bottom mounted pulse-coherent ac
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Styles, Julie Maree. "Inverse Modelling of Trace Gas Exchange at Canopy and Regional Scales." Phd thesis, 2002. http://hdl.handle.net/1885/48204.

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This thesis deals with the estimation of plant-atmosphere trace gas exchange and isotopic discrimination from atmospheric concentration measurements. Two space scales were investigated: canopy and regional. The canopy-scale study combined a Lagrangian model of turbulent dispersal with ecophysiological principles to infer vertical profiles of fluxes of CO2, H2O and heat as well as carbon and oxygen isotope discrimination during CO2 assimilation, from concentration measurements within a forest. The regional-scale model used a convective boundary layer budget approach to infer average regional is
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40

"Microscale Modeling Of The Canopy-Layer Urban Heat Island In Phoenix, Arizona: Validation And Sustainable Mitigation Scenarios." Doctoral diss., 2011. http://hdl.handle.net/2286/R.I.8877.

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abstract: Metropolitan Phoenix, Arizona, is one of the most rapidly urbanizing areas in the U.S., which has resulted in an urban heat island (UHI) of substantial size and intensity. Several detrimental biophysical and social impacts arising from the large UHI has posed, and continues to pose, a challenge to stakeholders actively engaging in discussion and policy formulation for a sustainable desert city. There is a need to mitigate some of its detrimental effects through sustainable methods, such as through the application of low-water, desert-adapted low-water use trees within residential yar
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(6620090), Anthony A. Hearst. "Remote Sensing of Soybean Canopy Cover, Color, and Visible Indicators of Moisture Stress Using Imagery from Unmanned Aircraft Systems." Thesis, 2019.

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Crop improvement is necessary for food security as the global population is expected to exceed 9 billion by 2050. Limitations in water resources and more frequent droughts and floods will make it increasingly difficult to manage agricultural resources and increase yields. Therefore, we must improve our ability to monitor agronomic research plots and use the information they provide to predict impacts of moisture stress on crop growth and yield. Towards this end, agronomists have used reductions in leaf expansion rates as a visible ‘plant-based’ indicator of moisture stress. Also, modeling rese
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42

Huang, Jing. "Coherent Structures in Land-Atmosphere Interaction." Diss., 2010. http://hdl.handle.net/10161/2403.

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<p>Large-scale coherent structures are systematically investigated in terms of their geometric attributes, importance toward describing turbulent exchange of energy, momentum and mass as well as their relationship to landscape features in the context of land-atmosphere interaction. In the first chapter, we present the motivation of this work as well as a background review of large-scale coherent structures in land-atmosphere interaction. In the second chapter, the methodology of large-eddy simulation (LES) and the proper orthogonal decomposition (POD) is introduced. LES was used to serve as
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43

Hung, Li-wen, and 洪儷文. "Net Photosynthetic Productivity at Different Canopy Layers of Cinnamomum camphora." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/37079211777544603943.

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碩士<br>國立臺灣大學<br>森林學研究所<br>90<br>The main purpose of this experiment was to study the correlation between photosynthesis of camphor tree, environment and physiology factors, and other major effect factors. Furthermore, to obtain the annual leaf productivity data. The statistical data of this experiment was analyzed by pair-sampled T-test and proceed regression models. The results showed that there were big differences between sun-grown leaves and shade-grown leaves with effect of environment, photosynthesis or transpiration factors. However, there was no difference between the uppe
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Lo, Yueh-Yun, and 駱月雲. "Study on Carbon Dioxide Fixation Efficiency at Different Canopy Layers ofCinnamomum osmophlaeum." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/26214357064197628934.

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碩士<br>國立臺灣大學<br>森林學研究所<br>91<br>The efficiency of carbon dioxide fixation of Cinnamomum osmophlacum Kaneh was analyzed by measuring net photosynthetic rate, transpiration rate, stomatal conductance rate and other environmental factor in this study in the field monthly. Effects of temperature , light， CO2， vapor pressure deficit(VPD) on photosynthetic rates of Cinnamamum osmophlacum Kaneh leaves were investigated on photosynthetic characteristics by portable photosynthetic system and self-organized environmental control system. When VPD was below 1.0KPa in ambient CO2 concentration l
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Lee, Alex C. "Utilising airborne scanning laser (LiDAR) to improve the assessment of Australian native forest structure." Phd thesis, 2008. http://hdl.handle.net/1885/49344.

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Enhanced understanding of forest stocks and dynamics can be gained through improved forest measurement, which is required to assist with sustainable forest management decisions, meet Australian and international reporting needs, and improve research efforts to better respond to a changing climate. Integrated sampling schemes that utilise a multi-scale approach, with a range of data sourced from both field and remote sensing, have been identified as a way to generate the required forest information. Given the multi-scale approach proposed by these schemes, it is important to understand how scal
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Shatadal, Pankaj. "Thin-layer rewetting rates of canola (Brassica campestris L.)." 2009. http://hdl.handle.net/1993/3603.

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Thin-layer rewetting tests were conducted for seeds of canola (Brassica campestris L.) in the temperature range of 7.5*C to 30.0*C at two relative humidities (80 and 90%) using a thin-layer wetting unit. Separate tests were done at 5.0, 7.0 and 10.0% initial moisture contents of seeds and 0.10, 0.25, and 0.43 m/s air velocities while the air was maintained at 30*C and 90% relative humidity. In the tests, a thin-layer (one to two kernels thick) of canola was held in the vertical plane and the conditioned air was passed through the layer, thus fully exposing the thin-layer of canola to the air.
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Chang, Wei-Yi, and 張瑋尹. "Spatial Heterogeneity of Stand Structure Between the Different Canopy Layers in Nanjenshan Secondary Forest." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/82343429659221696811.

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碩士<br>國立屏東科技大學<br>森林系<br>91<br>Nanjenshan ecological reserve is a subtropical seasonal forest. In the past, some area became artificial forest by cutting. In long term effect of monsoon and succession, this area had become a secondary forest with complex stand structure. In this study we used 5-hectare secondary forest sample plots data that were established by Nanjenshan long-term ecological research site in 1997 and used geographic information system (GIS) to explore the effect of monsoon in the different canopy layers. According to the past research, the stand of secondary forest in Nanjens
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Nuske, Robert S. "Acquisition and Characterization of Canopy Gap Patterns of Beech Forests." Doctoral thesis, 2019. http://hdl.handle.net/21.11130/00-1735-0000-0005-12B7-8.

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(11205411), Benjamin Zachary McCallister. "Life on the Edge: Structural Analysis of Forest Edges to Aid Urban Management." Thesis, 2021.

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<div>The accelerating expansion of agricultural and urban areas fragments and degrades forests</div><div>and their capacity to provide essential ecosystem services while increasing physiological stress</div><div>and mortality rates of trees growing near forest edges. Previous studies have documented that</div><div>edges are hotter and drier than forest interiors and trees nearer the edge grow slower. However,</div><div>the physical structure of a forest’s canopy may serve to mitigate to these effects. This study</div><div>quantifies forest fragmentation across the Central Hardwoods Region (CHR
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Imran, Hosen M. "The Urban Heat Island of Melbourne during Heatwaves: Impacts of Future Urban Expansion and Effectiveness of Green Infrastructure as Mitigation Strategies." Thesis, 2018. https://vuir.vu.edu.au/43345/.

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The city of Melbourne in southeast Australia experiences an Urban Heat Island (UHI) effect, which is exacerbated during heatwaves, and the latter are becoming more frequent, intense and longer in southeast Australia. In addition, Melbourne is the fastest growing city in Australia. Therefore, it is urgent to understand the dynamics of UHI and impacts of future urban expansion on the UHI during heatwaves. Based on these issues, there is a crucial need to investigate the effectiveness of potential mitigation strategies to minimize UHI effects during heatwaves. The overarching aim of the thesis is
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